EDIT: Now my PicoPSU wont give any voltage under load

team_andromeda · Nov 9, 2015

EDIT: Now that I've installed my PicoPSU, I can't get it to power anything. Turning on the supergun with nothing attached gives me correct readings on the pins. Plugging something in and turning it on does nothing. No readings on the pins. Computer ATX PSU powers just fine and I'm using a 12V, 6A cable into the 12-24V PicoPSU. That should be enough right?

Any clues? I'm so frustrated.

Original irrelevant post:

Spoiler:

mookie3three · Nov 9, 2015

Have you tried another power supply? What does the voltage read at the atx power supply?

team_andromeda · Nov 9, 2015

When I unplug the JAMMA harness I get the correct voltages at the harness. I have read that the CPS2 is a powerhog and can cause the voltages to drop, and I've also read that having wires that are too thin can do the same. I'm using a Thermaltake TR2 430watt PSU like this one:
http://www.amazon.com/Thermaltake-240-Pin-Power-Supply-W0070RUC/dp/B0009Q56N6

I feel like the voltages shouldn't be dipping but idk. My next step is buying thicker wire and trying that.

Xian Xi · Nov 9, 2015

On my supergun builds I use 14awg stranded wire for 5v and ground, nothing less. I've seen some use 18awg and 20awg for power. It'll work but not be able to pull much amps. An arcade PSU will be easier to work with since you can adjust it.

team_andromeda · Nov 9, 2015

Xian Xi said:
On my supergun builds I use 14awg stranded wire for 5v and ground, nothing less. I've seen some use 18awg and 20awg for power. It'll work but not be able to pull much amps. An arcade PSU will be easier to work with since you can adjust it.

I'll have to give that a try, I'll hit up my local home depot and see what they've got. The JAMMA harness I'm using is 22awg wire on everything. Bullshit!

kuze · Nov 9, 2015

I had better luck with older ATX PSUs that more closely match the amp ratings for an arcade PSU.

aha2940 · Nov 9, 2015

I use a MeanWell RT125A power supply. It has +5, +12 and -5 which works fine for arcade needs. So far, it has worked fine with everything I've thrown at it (including CPS2).

Regards.

Xian Xi · Nov 9, 2015

team_andromeda said:
I'll have to give that a try, I'll hit up my local home depot and see what they've got. The JAMMA harness I'm using is 22awg wire on everything. Bullshit!

I get all my local electronics supply stuff from IC supply. It's in Sand Island on the right side after you pass the 76 at the end of the strip before the stoplight.

ebinsugewa · Nov 9, 2015

I use an ATX and have no issues. I have the standard shit Chinese extension with the black edge connector and hanzi all over it.

team_andromeda · Nov 10, 2015

Xian Xi said:
I get all my local electronics supply stuff from IC supply. It's in Sand Island on the right side after you pass the 76 at the end of the strip before the stoplight.

Yeah dude, I love IC Supply! I plan on stopping there again asap.

In case anybody cares, it was the shitty JAMMA power wires that caused the problems. Replaced them with 16gauge and everything's peachy.

Razoola · Nov 10, 2015

I use an old ATX PSU also, downside is no voltage adjustments but its been solid otherwise. CPS2 is just fine on it and passes the issue I discovered recently. But as with anything, if you get a flaky ATX PSU, you will have problems.

team_andromeda · Nov 10, 2015

So I swapped out the temporary computer ATX PSU with my PicoPSU I got in the mail today, and it doesn't power on anything. I've updated my original post with more details....

RetroTechRewind · Nov 12, 2015

Does the power supply have any kind of over-current/over-voltage protection? Could be from that.

You don't have -5v wired somewhere incorrectly do you? Or even some voltage in reverse polarity somewhere? Something is shorted on your Jamma edge?

Double check your +5, +12, and -5v(if applicable) and make sure they're wired to the correct landings on your Jamma edge.

Are you blowing any fuses?

EDIT: Now my PicoPSU wont give any voltage under load

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